** Description changed: + SRU Justification + + Impact: Some systems are getting kernel panics during boot while parsing + tpm event logs from the firmware. This happens only when the tpm and + secure boot are both enabled in the firmware. + + Fix: 3 patches which are currently applied to the upstream EFI + maintainer tree. + + Test Case: On an affected system, booting a 5.3-based kernel will panic + during boot when the tpm and secure boot are enabled. A patched kernel + will boot successfully. The patches have been verified to fix the issue + on a gen 6 Lenovo X1 Carbon. + + Regression Potential: If the patches have bugs they could cause + regressions on systems not currently experiencing issues. The patches + are pretty straightforward though, so I believe the risk is minimal and + (given the severity of the issue on affected hardware) acceptable. + + --- + Image: http://cdimage.ubuntu.com/daily-live/20190926/eoan-desktop-amd64.iso Device: Dell XPS 13 7390 (201908-27305) When trying to start the live session ("try Ubuntu") or trying to install the ISO ("install Ubuntu"), the boot process stops within 1 second with a kernel panic (see attached screenshot). The system could boot with a previous version of Eoan image: 2019-09-09 09:11 (kernel 5.3.0-10) Workaround: disable TPM2 in the BIOS. /!\ Please note: the information below (and the attached file ProcCpuinfoMinimal.txt) come from a 18.04 live session, since I cannot boot anything with 19.10 beta image. ============================================== ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: syslinux 3:6.03+dfsg1-2 ProcVersionSignature: Ubuntu 5.0.0-23.24~18.04.1-generic 5.0.15 Uname: Linux 5.0.0-23-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.7 Architecture: amd64 CasperVersion: 1.394 CurrentDesktop: ubuntu:GNOME Date: Thu Sep 26 07:41:16 2019 Dependencies: gcc-8-base 8.3.0-6ubuntu1~18.04.1 libc6 2.27-3ubuntu1 libgcc1 1:8.3.0-6ubuntu1~18.04.1 mtools 4.0.18-2ubuntu1 syslinux-common 3:6.03+dfsg1-2 LiveMediaBuild: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=C.UTF-8 SHELL=/bin/bash SourcePackage: syslinux UpgradeStatus: No upgrade log present (probably fresh install)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1845454 Title: Kernel panic with 19.10 beta image To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1845454/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
